Analysis of apple epidermis in respect to ontogenic resistance against Venturia inaequalis

0520908 - ÚPT 2020 RIV CZ eng J - Článek v odborném periodiku
Zajícová, I. - Tihlaříková, Eva - Cifrová, P. - Kyjaková, Pavlína - Neděla, Vilém - Sechet, J. - Havelková, L. - Kloutvorova, J. - Schwarzerová, K.
Analysis of apple epidermis in respect to ontogenic resistance against Venturia inaequalis.
Biologia Plantarum. Roč. 63, OCT (2019), s. 662-670. ISSN 0006-3134. E-ISSN 1573-8264
Grant CEP: GA MŠMT ED0017/01/01; GA ČR(CZ) GA19-03909S
Institucionální podpora: RVO:68081731 ; RVO:61388963
Klíčová slova: apple scab * cell wall * cuticle * homogalacturonan * Malus domestica * pectin
Obor OECD: Plant sciences, botany; Analytical chemistry (UOCHB-X)
Impakt faktor: 1.601, rok: 2019
Způsob publikování: Open access
http://bp.ueb.cas.cz/artkey/bpl-201901-0135_analysis-of-apple-epidermis-in-respect-to-ontogenic-resistance-against-venturia-inaequalis.php

In order to understand mechanisms of ontogenic resistance to apple scab, we analyzed various aspects of young and old leaves. We have introduced an apple plants cultivation system where in vitro propagated and rooting explants produce a genetically uniform population of apple (Malus domestica cv. Idared) plants. In this work, we demonstrate that apple plants produced in our cultivation system showed susceptibility to Venturia inaequalis, the cause of apple scab disease in young leaves and resistance in old leaves, which is similar to orchard situation. Our analysis shows that the cessation of epidermal cell expansion and shape formation coincided with the onset of ontogenic resistance in older leaves. Formation of specific cuticular lamellar structures did not coincide with ontogenic resistance onset. Further, chemical composition analysis of wax from young susceptible and old resistant leaves did not reveal specific compounds involved in ontogenic resistance. Differences in homogalacturonan content in cell walls in susceptible and resistant cells as well as decreased methylesterification of pectin in resistant leaves suggest that polysaccharide composition of the cell wall may play a role in mycelium growth and nutrition.
Trvalý link: http://hdl.handle.net/11104/0305586